const formatDate = (date, fmt) => {

    date = new Date(date);

    if (typeof (fmt) === "undefined") {

        fmt = "yyyy-MM-dd HH:mm:ss";

    }

    if (/(y+)/.test(fmt)) {

        fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length))

    }

    let o = {

        'Y': date.getFullYear(),

        'M+': date.getMonth() + 1,

        'd+': date.getDate(),

        'H+': date.getHours(),

        'm+': date.getMinutes(),

        's+': date.getSeconds()

    }

    for (let k in o) {

        if (new RegExp(`(${k})`).test(fmt)) {

            let str = o[k] + ''

            fmt = fmt.replace(RegExp.$1, RegExp.$1.length === 1 ? str : ('00' + str).substr(str.length));

        }

    }

    return fmt
}

export {formatDate}

